Overview

overview

8

Static

static

1

avast_free...ne.exe

windows10-1703-x64

8

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General

  • Target

    avast_free_antivirus_setup_online.exe

  • Size

    256KB

  • Sample

    230328-rp4acabe44

  • MD5

    b0448005a7b8590e07a4869a76bf8e10

  • SHA1

    56fae6c512bfd190060e2357abf06a38e527a5df

  • SHA256

    8ead5ecef0c5d53901539a687a5ee733c1c91ee73c764f86ab86795852d7832e

  • SHA512

    a9d348affcf4f04bfe6a1db3a7a01a9112c19d5b835d942a3b272c6960575e0af8acfabc40ab0d8ac65a3341197ed1adee5a42e6b3be00fe257d2d0a351c375b

  • SSDEEP

    6144:PCfHrZae3GFqRQcMeh4WpywpjchNCPybeb:PCfLZadcM24fRN1e

Score
8/10
bootkitpersistence

Malware Config

Targets

    • Target

      avast_free_antivirus_setup_online.exe

    • Size

      256KB

    • MD5

      b0448005a7b8590e07a4869a76bf8e10

    • SHA1

      56fae6c512bfd190060e2357abf06a38e527a5df

    • SHA256

      8ead5ecef0c5d53901539a687a5ee733c1c91ee73c764f86ab86795852d7832e

    • SHA512

      a9d348affcf4f04bfe6a1db3a7a01a9112c19d5b835d942a3b272c6960575e0af8acfabc40ab0d8ac65a3341197ed1adee5a42e6b3be00fe257d2d0a351c375b

    • SSDEEP

      6144:PCfHrZae3GFqRQcMeh4WpywpjchNCPybeb:PCfLZadcM24fRN1e

    Score
    8/10
    bootkitpersistence

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks for any installed AV software in registry

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence
    behavioral1

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Security Software Discovery

1
T1063

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks